I have 7 geese. 3 are ganders. They are free range on my 3 acre property with large pond. They get along great, never any fighting. In the winter time I pen them up in the barn (large pen) to protect them from the elements and predators. Come late February/early March the dominate gander and dominate goose beat up on the passive gander and I seperate them. The goose lays eggs (which are not fertile) and sets. My question is; should I just seperate the sexes as soon as I pen them up for winter since they don't breed anyway? Or will the ganders still fight even without the females? I was told they need water to breed and that is why the eggs are infertile. But here in NE Wisconsin, the ice doesn't melt off the pond until the females are already setting.